C07C 49/665
A keto group being part of a condensed ring system
Official title: a keto group being part of a condensed ring system
C07C49/665 (A keto group being part of a condensed ring system) appears on 189 US grants and 88 published applications in this corpus.
Search patents in C07C- Granted patents
- 189
- Published applications
- 88
- Assignees
- 110
- Inventors
- 400
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 14 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 5 | 0 |
| 1994 | 11 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 9 | 0 |
| 1999 | 7 | 0 |
| 2000 | 8 | 0 |
| 2001 | 9 | 3 |
| 2002 | 7 | 6 |
| 2003 | 2 | 6 |
| 2004 | 3 | 2 |
| 2005 | 5 | 5 |
| 2006 | 6 | 7 |
| 2007 | 2 | 3 |
| 2008 | 2 | 4 |
| 2009 | 4 | 11 |
| 2010 | 3 | 4 |
| 2011 | 7 | 3 |
| 2012 | 3 | 4 |
| 2013 | 1 | 7 |
| 2014 | 4 | 2 |
| 2015 | 5 | 2 |
| 2016 | 4 | 4 |
| 2017 | 1 | 2 |
| 2018 | 1 | 3 |
| 2019 | 3 | 1 |
| 2020 | 2 | 3 |
| 2021 | 1 | 1 |
| 2022 | 3 | 0 |
| 2023 | 0 | 3 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing fluorenone10 Feb 2026US 12,545,633 B2Mitsubishi Gas Chemical Company, Inc.
- Anticonvulsant compounds9 Apr 2024US 11,952,338 B2Owen-Barry Pharmaceuticals Inc.
- Compositions and methods of making expanded hematopoietic stem cells using derivatives of fluorene4 Oct 2022US 11,459,293 B2ImmuneBridge Inc.
- Anticonvulsant compounds31 May 2022US 11,345,652 B2Owen-Barry Pharmaceuticals Inc.
- Syntheses, characterizations, and applications of heli-acenes3 May 2022US 11,319,266 B2University of Wyoming-Office of Research & Economic Development
- Anticonvulsant Compounds6 Mar 2025US 2025/0074861 A1Owen-Barry Pharmaceuticals Inc.
- Charge transfer complex4 Apr 2024US 2024/0109869 A1Adeka Corporation
- Method for producing fluorenone7 Dec 2023US 2023/0391705 A1Mitsubishi Gas Chemical Company, Inc.
- Compositions and methods of making expanded hematopoietic stem cells using derivatives of fluorene13 Apr 2023US 2023/0112489 A1ImmuneBridge Inc.
- Fullerene derivative, fullerene derivative production method, deposit, film, and electronic device30 Mar 2023US 2023/0099136 A1Mitsubishi Corporation
Most cited
By later US patents
- Process for the preparation of an olefin polymer239US 5,278,264 AHoechst Aktiengesellschaft · 1994
- Ligands for metals and improved metal-catalyzed processes based thereon143US 6,307,087 B1Massachusetts Institute of Technology · 2001
- Process for the preparation of an olefin polymer137US 5,329,033 AHoechst Aktiengesellschaft · 1994
- Metallocenes containing aryl-substituted indenyl derivatives as ligands, process for their preparation, and their use as catalysts137US 5,770,753 ATargor GmbH · 1998
- Metallocenes containing aryl-substituted indenyl derivatives as ligands, process for their preparation, and their use as catalysts123US 5,840,644 ATargor GmbH · 1998